Method and apparatus for adaptive equalization of high speed...

Details Method and apparatus for adaptive equalization of high speed... Method and apparatus for adaptive equalization of high speed...

2007-01-30

2007-01-30

Patel, Jay K. (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S349000, C375S350000, C455S501000

Reexamination Certificate

active

10385496

ABSTRACT:
A method and apparatus are described for adaptively removing interference from a signal. A received signal is amplified linearly along a first signal path to provide a first signal and amplified nonlinearly along a second signal path to provide a second signal. The received signal propagates through the first and second signal paths at substantially the same time. The first and second amplified signals are mixed in proportion according to determined first and second weights, respectively, to provide an output signal having interference removed. The output signal is filtered to produce a first filtered signal corresponding to a ripple envelope of the output signal and filtered substantially simultaneously to produce a second filtered signal corresponding to an average peak detected value of the output signal. The first and second filtered signals are compared to produce an error signal. The first and second weights are determined according to the error signal.

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patent: 6166598 (2000-12-01), Schlueter
patent: 6169764 (2001-01-01), Babanezhad
patent: 6940916 (2005-09-01), Warner et al.

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